WO2022111572A1

WO2022111572A1 - Rear wiper assembly

Info

Publication number: WO2022111572A1
Application number: PCT/CN2021/133064
Authority: WO
Inventors: 张强; 尧铁强; 程序
Original assignee: 台州法雷奥温岭汽车零部件有限公司
Priority date: 2020-11-26
Filing date: 2021-11-25
Publication date: 2022-06-02
Also published as: JP2023551266A; EP4253168A1; CN216684383U

Abstract

Provided is a rear wiper assembly (10), comprising a rear wiper arm (100), a cover (200), a joint (300), and a motion-stopping mechanism (700); a connector (300) and a cover (200) are hingedly connected to the rear end of the rear wiper arm (100); when the cover (200) is in a closed state, the cover (200) can cover the connector (300); the motion-stopping mechanism (700) comprises a first interference element (123) and a second interference element (221), at least one of the first interference element (123) and the second interference element (221) being a flexible element; the first interference element (123) is arranged on the rear wiper arm (100), and the second interference element (221) is arranged on the cover (200); when the cover (200) is in an open state and when the angle between the upper surface of the cover (200) and the upper surface of the rear wiper arm (100) is within a predetermined range of angles, the first interference element (123) and the second interference element (221) interfere with each other, preventing the cover (200) from turning over in the direction of the connector (300).

Description

A rear wiper assembly

technical field

The utility model relates to the field of mechanical structures, in particular to a rear wiper assembly.

Background technique

In a motor vehicle, a rear wiper is usually installed on the rear windshield to remove rainwater or dust that obstructs the driver's sight, so as to ensure the driver's rear vision.

The rear wiper generally includes a drive motor, a joint connected with the drive motor, a rear wiper arm hinged with the joint at one end, and a wiper blade engaged near the other end of the rear wiper arm, whereby the drive is driven. When the motor is working, with the help of the joint and the rear wiper arm, the wiper blade can swing at a certain angle while being attached to the rear windshield to scrape off rainwater or dust.

The joint and the drive motor are usually connected by a nut. For the sake of aesthetics, the rear wiper may also include a cover to cover the joint and the nut. During assembly and maintenance, the cover can be flipped upwards to open, however, the cover in the prior art often cannot be kept in an open state, and is very easy to flip down to interfere with the disassembly and assembly tool.

Utility model content

Therefore, the purpose of the present invention is to provide a rear wiper assembly which can at least partially solve the above-mentioned problems.

According to one aspect of the present invention, a rear wiper assembly is provided, which includes a rear wiper arm, a cover, a joint and a stopper mechanism, wherein the joint and the cover are hinged to the rear end of the rear wiper arm; In the closed state, the cover can cover the joint; the stopper mechanism includes a first interference element and a second interference element, and at least one of the first interference element and the second interference element is an elastic element; the first interference element is arranged after the rain. On the wiper arm, the second interference element is arranged on the cover, and when the cover is in an open state and the included angle between the upper surface of the cover and the upper surface of the rear wiper arm is within a predetermined angle range, the first interference The element and the second interference element interfere with each other to prevent the cover from turning over in the direction of the joint.

According to the embodiment of the present invention, by providing the stopper mechanism, the cover can be prevented from being turned downward to cover the rear end of the rear wiper arm or interfere with the disassembly tool during the disassembly and assembly process of the joint and the drive motor.

In some embodiments, the hinge axis of the joint is different from the hinge axis of the cover.

In some embodiments, a hinge shaft is provided on the upper surface of the rear wiper arm, and two claw-shaped parts extend vertically from the upper surface of the cover. The rotation of the part around the hinge shaft can drive the cover to turn over.

In some embodiments, the first interference element is provided on the hinge shaft, and the second interference element is provided on the upper surface of the cover between the two claws.

In some embodiments, two U-shaped grooves are provided on the side wall of the rear wiper arm, two cylindrical ears are provided on both sides of the joint, and the U-shaped grooves cooperate with the ears so that the joint is hinged to the rear wiper arm.

In some embodiments, the predetermined angle range is 85-90 degrees.

In some embodiments, the amount of interference between the first interference element and the second interference element is 0.2 mm.

In some embodiments, the first interference element has a triangular cross-section and the second interference element has a trapezoidal cross-section.

In some embodiments, the hinge axis of the joint is the same as the hinge axis of the cover.

In some embodiments, the rear wiper assembly further includes: a wiper blade, the wiper blade is engaged on the rear wiper arm; and a spring, the spring is connected between the rear wiper arm and the joint.

In some embodiments, the rear wiper assembly further includes: a drive motor, and the joint includes a connection hole for connecting to the output shaft of the drive motor.

Description of drawings

The above-mentioned characteristics, technical features, advantages and implementations of the present invention will be further described below in a clear and easy-to-understand manner through the description of the preferred embodiments and in conjunction with the accompanying drawings, wherein,

1 is a bottom view of a rear wiper assembly 10 according to an embodiment of the present invention;

FIG. 2 is a top view of the rear wiper arm 100 in FIG. 1;

FIG. 3 is a bottom view of the rear wiper arm 100 in FIG. 1;

Figure 4 is a bottom view of the cover 200 in Figure 1;

5 is a cross-sectional view of the rear wiper assembly 10 in FIG. 1 along a plane where the first interference member 123 and the second interference member 221 are located, wherein the cover 200 is in a closed state;

6 is another cross-sectional view of the rear wiper assembly 10 in FIG. 1 along a plane where the first interference piece 123 and the second interference piece 221 are located, wherein the first interference piece and the second interference piece are in an interference state;

Figure 7 is a bottom view of the joint 300 in Figure 1;

FIG. 8 is a side view of the connector 300 of FIG. 1 .

Detailed ways

Embodiments of the present invention are exemplified below. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit of the present invention. Accordingly, the drawings and description are illustrative and not restrictive in nature. In the following text, the same reference numerals generally denote elements with the same or similar function.

According to the general concept of the present invention, a rear wiper assembly is provided, which includes a rear wiper arm, a joint, a cover and a stopper mechanism. The joint and the cover are hinged to the rear end of the rear wiper arm; In the closed state, the cover can cover the joint; the stopping mechanism includes a first interference element and a second interference element, at least one of the first interference element and the second interference element is an elastic element; the first interference element is arranged on the rear wiper On the arm, the second interference element is arranged on the cover, and when the cover is in an open state and the included angle between the upper surface of the cover and the upper surface of the rear wiper arm is within a predetermined angle range, the first interference element It interferes with the second interference element to prevent the cover from turning over in the direction of the joint.

1 shows a bottom view of a rear wiper assembly 10 according to an embodiment of the present invention. As shown in the figure, the rear wiper assembly 10 may include a rear wiper arm 100, a cover 200 and a joint 300, The joint 300 is accommodated in the groove 110 at the rear end of the rear wiper arm 100, and is hinged to the rear end of the rear wiper arm 100 around the hinge axis A-A; the cover 200 is also hinged to the rear end of the rear wiper arm 100, but Its hinge axis B-B is different from the hinge axis A-A of the joint 300; the cover 200 is now in a closed state, which at least partially surrounds the rear end of the rear wiper arm 100, and thereby covers the joint 300, and at the same time, for aesthetic reasons, The profile of the outer surface of the cover 200 matches the profile of the outer surface of the rear wiper arm 100 .

2 and 3 respectively show a top view and a bottom view of the rear wiper arm 100 of FIG. 1 , as shown in FIG. 2 , a rectangular opening 121 is provided on the upper surface 120 of the rear end of the rear wiper arm 100 . Two sides of the 121 are connected by a hinge shaft 122 , and the hinge shaft 122 can be used to hinge the cover 200 . As shown in FIG. 3 , on the

opposite side walls

130 and 130 ′ of the rear end of the rear wiper arm 100 , U-shaped grooves 131 are respectively provided, which can be used for the hinge joint 300 .

4 is a bottom view of the cover 200 of FIG. 1 , as shown, the cover 200 includes a main body 210 and an extension 220 . The extension 220 extends from the upper surface 211 of the main body 210 , that is, the main body 210 The upper surface 211 and the extension portion 220 constitute the upper surface of the cover 200 . When the cover 200 is in the closed state, the main body portion 210 may at least partially surround the rear end of the rear wiper arm 100 and cover the joint 300; the shape and size of the extension portion 220 are the same as those of the rectangular opening 121 of the rear wiper arm 100 Shape and size to match. As shown in FIG. 4 , the cover 200 further includes two claw-shaped portions 230 disposed on the two sides of the extension portion 220 , which extend perpendicular to the upper surface of the cover 200 , and each claw-shaped portion 230 opens with The hinge shaft 122 of the rear wiper arm 100 has a complementary groove 231, and the claw portion 230 rotates around the hinge shaft 122 to drive the cover 200 to turn over. When the turning angle α of the cover 200 (ie, the angle between the upper surface of the cover 200 and the upper surface 120 of the rear wiper arm 100 ) is small, for example, less than or equal to 90 degrees, the joint 300 and the driving motor During the disassembly and assembly process, the cover 200 is easily turned downward due to vibration and the like, and the cover is closed on the rear end of the rear wiper arm 100, or interferes with the disassembly and assembly tool.

In order to solve the above problems, the rear wiper assembly 10 may further include a stopper mechanism 700 , as shown in FIGS. 2 and 4 , the stopper mechanism 700 includes a first interference element 123 and a second interference element 221 . The first interference element 123 On the hinge shaft 122 of the rear wiper arm 100 , the second interference element 221 is provided on the extension part 220 of the cover 200 and is located between the two claw-shaped parts 230 . At least one of the first interference element 123 and the second interference element 221 is an elastic element.

FIG. 5 is a cross-sectional view of the rear wiper assembly 10 of FIG. 1 along a plane where the first interference member 123 and the second interference member 221 are located, wherein the cover 200 is in a closed state, and FIG. 6 is the rear wiper of FIG. 1 . Another cross-sectional view of the assembly 10 along a plane where the first interference piece 123 and the second interference piece 221 are located, wherein the cover 200 is in an open state, and the first interference piece 123 and the second interference piece 221 are in an interference state. During the process of gradually increasing the flip angle α of the cover 200 from 0 degrees (ie, the closed state), the second interference element 221 gradually approaches the first interference element 123 . When the flip angle of the cover 200 is within a predetermined angle range When the first interference element 123 and the second interference element 221 interfere, the cover 200 can be prevented from turning over in the direction of the joint during the disassembly and assembly process.

In one example, the above-mentioned predetermined angular range is related to the size and position of the first interference element 123 and the second interference element 221 . Preferably, the above-mentioned predetermined angle range may be close to the maximum turning angle of the cover 200, for example, but not limited to, 85-90 degrees.

In an example, the tightness of the interference between the first interference element 123 and the second interference element 221 can be changed by adjusting the amount of interference between the first interference element 123 and the second interference element 221 . The amount of interference refers to the length of the overlapping portion of the second interference element 221 when the second interference element 221 contacts the first interference element 123 but does not interfere. For example, but not limited to, the amount of interference between the first interference element 123 and the second interference element 221 is 0.2 mm. In addition, the tightness of the interference between the first interference element 123 and the second interference element 221 can be adjusted so that after the disassembly and assembly is completed, the cover 200 can be closed by overcoming the interference force without much effort. The rear end of the wiper arm 100.

In one example, as shown in FIGS. 5 and 6 , the first interference element 123 has a triangular cross-section, and the second interference element 221 has a trapezoidal cross-section. It should be noted that the shapes of the first interference element 123 and the second interference element 221 are not limited to this, and they may have other arbitrary shapes.

It should be noted that although FIG. 1 shows that the cover 200 and the joint 300 have different hinge axes, in other embodiments, the cover 200 and the joint 300 may have the same hinge axis. In this case, the position of the first interference element 123 on the hinge shaft 122 and the position of the second interference element 221 on the extension part 220 can be changed, for example, but not limited to, the first interference element 123 and the second interference element 221 can be changed. The interference element 221 may be located between the cover 200 and the joint 300 .

Figures 7 and 8 show a bottom view and a side view of the joint 300 of Figure 1, respectively. As shown in Figures 7 and 8, two cylindrical ears 310 are provided on both sides of the joint 300, which are connected to the rear of the joint 300. The two

U-shaped grooves

131 and 131 ′ on the wiper arm 100 are matched so that the joint 300 is hinged to the rear wiper arm 100 .

In an example, as shown in FIG. 1 , the rear wiper assembly 10 may further include a wiper blade 400 engaged on the rear wiper arm 100 for scraping rain or dust on the rear windshield; the spring 500 , which is connected between the rear wiper arm 100 and the joint 300 for pressing the wiper blade 400 on the rear windshield.

In one example, as shown in FIGS. 5 and 6 , the rear wiper assembly 10 may further include a drive motor 600 , as shown in FIG. 7 , the joint 300 includes a connection hole 320 , and the joint 300 may be connected to the on the output shaft of the drive motor 600 .

The present invention is not limited to the above-mentioned structure, and other various modifications can also be adopted. While the invention has been described in terms of a limited number of embodiments, those skilled in the art can, with the benefit of this disclosure, devise other embodiments without departing from the scope of the invention disclosed herein. Therefore, the protection scope of the present invention should be limited only by the appended claims.

Claims

A rear wiper assembly (10), characterized by comprising a rear wiper arm (100), a cover (200), a joint (300) and a stopper mechanism (700), the joint (300) and the A cover (200) is hinged to the rear end of the rear wiper arm (100);

When the cover (200) is in a closed state, the cover (200) can cover the connector (300);

The stop mechanism (700) includes a first interference element (123) and a second interference element (221), and at least one of the first interference element (123) and the second interference element (221) is elastic elements; the first interference element (123) is arranged on the rear wiper arm (100), the second interference element (221) is arranged on the cover (200), and the cover ( 200) is in the open state, and the included angle between the upper surface of the cover (200) and the upper surface of the rear wiper arm (100) is within a predetermined angle range, the first interference element (123) ) and the second interference element (221) interfere with each other to prevent the cover (200) from turning over in the direction of the joint (300).
The rear wiper assembly (10) according to claim 1, wherein the hinge shaft (122) of the joint (300) is different from the hinge shaft (122) of the cover (200).
The rear wiper assembly (10) according to claim 2, wherein a hinge shaft (122) is provided on the upper surface of the rear wiper arm (100), and a hinge shaft (122) is provided on the upper surface of the cover (200). There are two claw-shaped parts (230) extending vertically on the surface, a groove (231) complementary to the hinge shaft (122) is opened on the claw-shaped parts (230), and the claw-shaped parts (230) surround the The rotation of the hinge shaft (122) can drive the cover (200) to turn over.
The rear wiper assembly (10) according to claim 3, wherein the first interference element (123) is provided on the hinge shaft (122), and the second interference element (221) is provided on the hinge shaft (122) on the upper surface of the cover (200) and located between the two claw-shaped parts (230).
The rear wiper assembly (10) according to claim 3, wherein two U-shaped grooves (131) are provided on the side wall of the rear wiper arm (100), and the joint (300) Two cylindrical ear portions (310) are provided on both sides of the blade, and the U-shaped grooves (131) cooperate with the ear portions (310) so that the joint (300) is hinged to the rear wiper arm ( 100).
The rear wiper assembly (10) according to claim 1, wherein the predetermined angle range is 85-90 degrees.
The rear wiper assembly (10) according to claim 1, wherein the amount of interference between the first interference element (123) and the second interference element (221) is 0.2 mm.
The rear wiper assembly (10) according to claim 1, wherein the first interference element (123) has a triangular cross-section, and the second interference element (221) has a trapezoidal cross-section.
The rear wiper assembly (10) according to claim 1, wherein the hinge shaft (122) of the joint (300) is the same as the hinge shaft (122) of the cover (200).
The rear wiper assembly (10) according to any one of claims 1 to 9, characterized in that, further comprising:

a wiper blade (400), the wiper blade (400) is engaged on the rear wiper arm (100);

A spring (500) is connected between the rear wiper arm (100) and the joint (300).
The rear wiper assembly (10) according to claim 10, further comprising:

A driving motor (600), the joint (300) includes a connecting hole (320) for connecting to the output shaft of the driving motor (600).